PI 7.31 receiver HTTP channel error

HI

I am using PI 7.31 single stack.

Working on IDOC to HTTP scenario.

IDOC reached PI successfully and receiver HTTP chanel is giving below error -

"

Exception caught by adapter framework: Data is not repeatable.

Transmitting the message to endpoint <local> using connection IDoc_AAE_http://sap.com/xi/XI/System failed, due to: com.sap.aii.adapter.http.api.HttpAdapterException: ERROR_SENDING_HTTP_REQUEST, Data is not repeatable.

"

Any idea on it,why HTTP receiver channel is giving this error